mottle

mot·tle
/ ˈmätl/
•
v. [tr.] (usu. be mottled)
mark with spots or smears of color:
the cow's coat was light red mottled with white |
[as adj.] (mottled)
a bird with mottled brown plumage.•
n.
an irregular arrangement of spots or patches of color:
the ship was a mottle of khaki and black. ∎ (also mottling)
a spot or patch forming part of such an arrangement:
the mottles on a troutwhite marble with mottlings of black and gray.

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